Slip



R. V. UHRlG June' 17, 1930.

SLIP

Filed April 4, 1929 .WML WW M 44% 0 Patented June 17, 1939' Price RICHARD V. UHR/IG, F ALHAMBRA, CALIFORNIA SLIP Appiieation ined April 4, 1929. serial No. 352,351.

rIhis invention has to do with a slip for ing slips provided by this invention in operating position thereon. Fig. 2 is a side elevation of the rotary table taken as indicated by line 2-2 of Fig. 1 showing the handles of the slips resting on the table. Fig. 3 is a top or plan view ot a slip showing the handle in an out, or horizontal position. Fig. 4 is a view of a slip showing the handle in an up, or vertical position. Fig.'5 is a view taken on line 5 5 on Fig. 4. Fig. 6 is an-enlarged detailed sectional view taken as indicated by line 6 6 on Fig. 1.

use in a rotary table7 or the like, and it is a general object of the invention to provide a slip that is easily handled and cannot fall into the well.

In the rotary method of drilling wells it is common to use slips in combination with rotary tables for the purpose of holding or engaging various parts such as casings, tubing, etc. The slips used are segmental Wedge members, and are generally used in sets of three or more. The handles provided 0n the slips are generally either cables or other flexible parts'or U-shaped metal bails. In handling the slips it is often very diticult for the operator, usually wearing gloves, to engage or grasp the handles when they rest on the rotary table as the table is often covered with mud, oil, or other material, making the 2 handles slippery. Further, a slip isk often accidentally allowed to fall throughv the rotary table and into the well, in which case it becomes necessary to fish the slips out of the well, an operation which is usually more or less diiiicult and expensive.

It is an object of the invention to provide a slip having a handle with gripping parts which are free of the rotary table or other supports and always in position to be grasped by the operator. Itis another object of the invention to provide a slip of the character mentioned that cannot be passed or lost through the Vopening in a rotary table. I

Another object of the invention is to provide a slip having an improved, braced handle which is durable and inexpensive of manufacture'. I

It is a lfurther object/ot the invention to provide an improved slip that is suitable for use. generally, in rotary tables, spiders, etc., for handling casing, pipe, or the like.

`he various objects and features of my invention will be best and more fully 'understood from ythe following detailed 'description of 'a typical preferred form of the invention, throughout with description reference is had to the accompanying drawings, in

which:

Fig. 1 is a plan View au of a rotary table show- T he fulA as present invention 1s particularly useapplied to or in connection with slips such as are used with rotary tables usedvin the rotary method of drilling wells. It is to be understood that the invention is also applicable to slips usedV in connection with spiders for handling pipe, and the like. For purpose of example, I have shown the slips embodying the present invention in operating positions in a typical rotary table 10 having the usual opening 11 to carry bushin shown 0s. In Figs. 1 and 2 of the drawings I have slip bushings 12 in the opening 11 of the table and have shown the slips 13 embodying the invention in osition in the bushings 12 to hold a casing l. In the drawings I have shown three slips arranged in the bushings. Itl is to be understood, however, that the invention can be applied to slips of various sizes and shapes.

A The present invention is an improvement in the device described in my co-pending application, Serial No; 289,736, filed July 2, it; 1928, entitled Slips for rotary table and spiders for handling pipe.

Each slip 13 embodying the present invention includes a main part or` slip body A and a handle B. The present invention is zit..

concerned primarily with the handle and the combination of slip body and handle. The slip body may be of any suitable form. For convenience,v I have shown a popular type of l slip in which the body is 4provided with a de-V tachable inner tace 16to engage a casino', or the like. The outer part or Aexteriorl? the body A is Jformed to seatvor bear in the opening in the bush'ing'12.

The

handle B providedV by this invention wsj;

l legs and adapted to support `the head/troni' the rotary table so that it is accessible and in position to be readily gripped. n

The legsQO 'may be attache-dto the body A at spaced points 'and may .extend in parallel relation :troni the body. vas shown in the 'fdrawings'. T he `legs 2O are'pivotally connectvfed to the body and inay be' carried in a single pivot pin ln the drawings Ilia-ve shown so the il 2Q ,carried on asingie pivotpin 3l paiiising through lugs 30 provid the upper Gnd' portion ofthe body. he piifot pin 35.1 'entends tlii'oiigheyes 32 forined the inner :end portions f of 'the legs vlegsso thattlie' handle' s movable between an up or vertical position Ashown in F .d andi) Yanda down or horizontal position shownV 1,2, Vand G. A o

,"Tlieg'lviead 2l ijs'pcarried at the outer ends of the 'legs' QOfandfs transversely.disposed or a janged at right angles to the legs. The head projectsin either direction beyond the legs softhatit is wider than the `slip body; ln `practice tl'ieex'tent oi the vhead is consider- 'ably greaterthan the siiiallest diameter of f-i `cannot ypossibly passV through the bushing. rllie `head 2l' connected to the legs-'by connecting parts Vor extensions 2? ofthelegs oinling thelegs with the ends of thehead'. The Yhead -ZlentendsV laterally in opposite directioiisbey'ond the straight parallel portions of Ythe legs 20 and is loc'ate'doutward beyond the lendslof said portionsfoir'the legsfand )therefore the lleg extensions 27 are curved and extend laterally frointhe legs to connect the ends of the ,head andthe ends ofthe parallel ,portions ofthe legs.v 'The legvexten'sions 2T rmay have linain portions 28'spaced ii'oin the head and extendingfparallel tothe head as lshown in the drawings. T he llegs 20, the log extensions 2?, and the head 2l inaybetoi'iiied ror body oline-Ital, it-being olirif an be easil' crei' iV ,he ope" combination or, he handle cannot nf the ope; ginft"v l pport's jprovided to lend rigidandle'construction and to Vsupport the head Qliso'tli t the rotaryv table consist of parts' foinied to desirable that :the supports be formed sei-thatv they support Aor carry the Ihandle insu-ch a v way that the ahead 2lv isa sii'bstf-rn'trailY dis- 'ie o jeninG' inthe 'bushing l2 so that Ithe sli)V s at all times-free et proiect downwardly troni or beyond thehead,

and in the preferred forni of the invention they connect the head with other parts of the handle. .In the preferred forni of the invention illustrated in the drawings, the supports 22 extend between the .head 2l and outer ends ofthe parallel portions ofthe legs 20. The supports are shown attached to the legs 20 at the points of joinder ofthe legs and the leg extensions 27. lt will be obvious thatthe supports inightextend from the head to other parts of the handle or other `parts .of the legs including the leg extensions.Y ln

' the drawings I have illustrated two supports extending from points intermediate the ends of the. head to the outer ends of the leg parts 20', and I have shown the supports in parallel alignment with the'parallel ,portions of v,tlie'legsL vThere may be any nuinber of sup-l Aports)J and they niayjbe otherwise arranged without departing from Vthe broaderjaspects ojl thei'nveiition 'The'su'pports are downwardly when the :handle iis'in lthe positance above the rotary'table when the handle is in' thevdown, or horizontal rpositionf shown in VFig. 2 Vof the drawings.l vrlliisfis governed ro-wn curved'y downwardly, that is, they ,ez-tend sai l It is iii) lby .the extent to which the supports extend 1downiwardly Viii'oin theV head. 'The supports 22' are preferably rigidly attached to the head rand legs,` for instance, 'they are preiieifably integral with the 'head and-legs,.so that they brac'ea'nd lend rigidityto the handle construction aswell as act-as props or rests 'for' the 'handle when' itis in t'liehorizontal position. y y Y v Freni the foregoing description it isfappaient 'thatt'he slip construction provided Fby niy invention :is practical and of great ii til' The supports 22 not only brace andlend rig- ,idity to the handle, but lalso Aaot to-support orprop ,theU handle so that theihead 2l is readily accessible and cany -be easily gripped Y the persen handling kthe sliifps. The haii- 'd'le isproportioned so thatfthe sleip cannot fall throughthe opening 1in the rotary table.

Furti-her, it istjo' be :noted that .the vhai/idle 'not onlzysate and -convenient to use, but is Y simple and inexpensive Vof manufacture.

l-laviiig lescribedk only a typical, preferred icoriii'of iiiy invention, l do notwish to 'liniit Vvmyself to the specific details {set-'ortli, but fwish-to reserve to'niyself any'Y changes or p n variations that iiiay appear to 'those' skiled in the vart vor fall 'iii "following gclaiins. Y' '7" thin the, scope oitl the MYllaving described `my'invention, -I claim:

of arota'ry table' including, a body to liti-the opening, and? a rhandlel onV the Ybody iis " l.A A. slip for use in the' slip carrying openy Y wider than the greatest dimension of the opening.

2. A slip 'for use in a table including, a body to extend into the table, a handle on the body, and a downwardly projecting member on the handle removed from the body to engage the table to hold a part of the handle away from the table in position to be gripped.

A slip for use in a table including, a body to extend into the table, and a handle on the body having a head wider than the body and a support Jfor engaging the table to hold the head spaced above the table.

Li. A slip for use in a table including, a body to extend into the table, and a handle on the body having a head wider than the body and spaced supports for engaging the table to hold thehead spaced above the table.

5. A slip for use in a table including, a body to extend into the table, and a handle on the body having a head wider than the body and a support attached to the head and engaging the table to hold the head spaced above the table.

6. An integral slip handle including, a leg for connection with a slip, a head, and a downwardly projecting member for holding the head in position to be gripped.

7. A slip handle including, a leg, a head connected with the leg, and a support extending between the leg and head independent of the connection of the leg and head.

8. A slip handle including, legs having parallel portions, a head connected with the legs, and a downwardly projecting support between the head and said leg portions.

A slip handle including, legs having parallel portions, a head connected with said leg portions and projecting a substantial distance laterally from said leg portions, and a downwardly projecting support between the bead and one of the legs.

l0. A slip handle including, legs having parallel portions, a head, extensions on the legs connecting the parallel portions and head, and downwardly extending supports between the legs and the head.

ll. A slip handle including, legs having parallel portions, a head, extensions on the legs connecting the parallel portions and the head. and downwardly projecting members extending between the legs and the head in alignment with the said parallel portions.

l2. A slip to operate in an opening in a rot-ary table including, a body to operate in the opening, and a handle on the body including, legs pivotally connected to the bodyV and extending in spaced relation therefrom,

a head at the outer ends of the legs disposed .transversely thereof and extending in either f direct-ion beyond the legs, extensions con.- necting the legs and the head, and a support extending between the head and the outer end oi one leg, there being a portion of said support projecting below the head, the head being wider than the body and wider than the opening in the table.

In wit-ness that I claim the foregoing I have hereunto subscribed my name this 16th day of March, 1929.

RICHARD V. UI-IRIG. 

